CCS/LAUNCHXL-CC2640R2: SPI maximun CLK doubt

Tool/software: Code Composer Studio

Hello, before the question I may apologize for my english level.

I new with the CC2640 MCU, I saw in Chapter 20 SSI of the Technical Reference Manual (TRM) the configuration for use SPI interface. The TRM have a section about the core clock for the bit rate, I read that default clock it´s 24 MHz, but in datasheet said the clock can up to 48 MHz.

My question is: it´s possible set a 20 MHz in the master mode?, if it is possible, the library SPI.h can configure this bit rate with SPI_Params.bitRate?

Again I apologize for my writing, hope that can understand me and help to clarify my doubt.

Thanks!.